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Pre-Algebra

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1. What data are represented by the stem-and-leaf plot below?


3 | 7 8 9
4 | 1 3 7
5 | 2 4

Key: 4 | 1 means 41




a. 37, 38, 39, 41, 43, 47, 52, 54
b. 73, 83, 93, 14, 34, 74, 25, 45
c. 7, 8, 9, 1, 3, 7, 2, 4
d. 37, 38, 39, 14, 34, 74, 25, 45




2. Find the mode and the median of the data in the stem-and-leaf plot below.


5 | 4 4 8
6 | 0 3 5
7 | 3 4 6
8 | 2 5
9 | 7 8

Key: 6 | 3 means 63



a. no mode; 73
b. 63; 73.5
c. 54; 73
d. no mode; 73.5


3. The stem-and-leaf plot shows the number of fish that were caught by several ships in a fishing fleet. How many ships caught 50 fish or fewer?


Stem Leaves
__________________________________
3 0 3 3 5 6
4 0 2 4 5 8 9 9
5 0 1 2 4


key: 2 | 4 means 24


a. 12
b. 16
c. 14
d. 13


My Answer:

1 c
2 d
3 a

  • Pre-Algebra -

    :( ANSWER PLEASE ANSWER PLEASE

  • Pre-Algebra -

    You need to develop some patience and wait for some REAL math teachers to find this.

    Stop with the extra posts ... they'll skip your question because they'll think it's been answered!!

  • Pre-Algebra -

    you have no idea what your talking about. You also have no idea how long she's been waiting for an answer. ^^

  • Pre-Algebra -

    ^^^And you have no idea that this question was posted in 2013

  • Pre-Algebra -

    lol fail
    ....dang just need that 1 answe about the ships caught 50 fish

  • Pre-Algebra -

    Lesson 4: Unit 3, Grade 8 Steam and leaf plots quiz.
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    The questions:

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    1. What data are represented by the stem-and-leaf plot below?
    Three rows of numbers are shown.
    The key shows that 4 vertical line 1 means 41.
    Row 1 is 3 vertical line 7 8 9
    Row 2 is 4 vertical line 1 3 7
    Row 3 is 5 vertical line 2 4

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    2. Find the mode and the median of the data in the stem-and-leaf plot below.
    Five rows of numbers of numbers are shown.
    Row 1 is 5 vertical line 4 4 8
    Row 2 is 6 vertical line 0 3 5
    Row 3 is 7 vertical line 3 4 6
    Row 4 is 8 vertical line 2 5
    Row 5 is 9 vertical line 7 8
    Label at bottom reads "Key: 6 vertical line 3 means 63"

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    3. The stem-and-leaf plot shows the number of cans of food collected by various students for a food drive. How many students collected more than 43 cans?

    There are 3 rows and 2 columns in the stem and leaf plot. The first columns is titled Stem. The second column is titled leaves.
    First row: stem 3 and leaves 0 1 1 1 4 4 4
    second row: stem 4 and leaves 0 1 3 4 4 5
    third row: stem 5 and leaves 0 3 3 6 8
    key: 3 | 5 means 35

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    4. Make a histogram for drivers’ ages using the data from the table below.

    Drivers' Ages
    Age Frequency
    17–19 8
    20–22 7
    23–25 9
    26–28 4


    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    5. The numbers below represent the scores on a science test. Graph the data in a line plot.

    58, 55, 54, 61, 56, 54, 61, 55, 53, 54

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


    6. Find the mean of the following data set:

    25, 30, 20, 20, 25, 35, 35, 10

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    7. The stem-and-leaf plot shows the number of fish that were caught by several ships in a fishing fleet. How many ships caught 50 fish or fewer?

    The stem and leaf plot is shown in two columns. The first column is titled Stem. The second column is titled Leaves.
    First row Stem 3 Leaves 0 3 3 5 6
    Second row Stem 4 Leaves 0 2 4 5 8 9 9
    Third Row stem 5 Leaves 0 1 2 4

    key: 2 | 4 means 24

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    Note: the 8th one is a written response but if you search for it you should be able to find it.
    And now the answers:

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    1) 37, 38, 39, 41, 43, 47, 52, 54

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    2) 54; 73

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    3) 8

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    4) the third one... its a graph. the 17-19 one reaches up to 8 and 20-22 reaches up to 7, between 6 and 8. 23-25 reaches 9, between 8 and 10. 26-28 reaches up to 4.

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    5) this line plot has 7 xs between 52 and 57 and 3 xs between 57 and 62. they do NOT have xs above the numbers.

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    6) 25

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    7) 13

    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


    good luck! oh, and if you want to thank me, you could follow me on Instagram first on @mischievous_mc and dm me for confirmation before I give you the account I want you to follow me on. thank you~ also, my mom took my phone so I might not be able to message anyone back for a while. fml

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